NATR20-PP bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the NATR20-PP model number is decoded

envelope 20×47×25 mm: the 47 mm outside diameter is the track-running surface — a thick-walled outer ring over a 20 mm bore — and the 25 mm width sets the contact width on the mating track the catalogue lists C 15.4 kN and C0 26 kN for the NATR yoke-type track roller with cage and axial guidance; the C/C0 ratio of 0.59 reflects a rolling-element pack sized for heavy static track loading, and the 13.5 mm radial section gives the outer ring its bending stiffness fatigue load limit Cur is 3.45 kN at 20 mm bore, equivalent to 0.77 kN of dynamic rating per millimetre — the limiting speed is 2,400 r/min and, as for HR1 track rollers, no thermal reference speed is published the 20 mm bore takes the mounting pin or shaft; across the 25 mm contact width the dynamic rating works out to 0.62 kN per millimetre of rolling-element complement mass is 236 g, or 0.20 g per mm² of the 47×25 mm track envelope — inertia that the drive must accelerate on every index of the cam the 20 mm pin bore falls in the small band, the workhorse size for gearbox planetary positions, hydraulic pumps and general cam and linkage duty The cage can be damaged by heavy shock loads even though the rollers would survive — size to C, not just envelope The outer-ring ribs give axial guidance, so the roller tolerates light thrust from skewed tracks without external flanges; the 25 mm width covers most standard cam geometries Reading -PP: rubbing seals at each face of the 47 mm outer ring; they protect the rolling-element pack in abrasive track environments at the cost of a small drag torque. Typical applications include packaging machine timing mechanisms, woodworking machine feed tracks and agricultural and textile cam followers, where the 47 mm track diameter and 15.4 kN dynamic rating match the duty. In packaging machine timing mechanisms the unit fits a compact 20 mm seat, and in woodworking machine feed tracks the 236 g mass keeps follower kinetics light. Designers also specify it for agricultural and textile cam followers, relying on the 25 mm width and the published 26 kN static rating. Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam. Check the mating track hardness and flatness — a soft or scalloped rail fails before the 47 mm outer ring does.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Yoke lugs must support the pin on both sides over its full length — single-sided support turns the pin into a cantilever beam.
• Check the mating track hardness and flatness — a soft or scalloped rail fails before the 47 mm outer ring does.
• Full-complement NATV/NUTR/PWTR rollers make heat and flat-spot easily — slow continuous rotation is fine, stationary load on a turning track is not.